Resilient tire for road-vehicles.



w H. CARMONT.

RESILIENT TIRE FOR ROAD VEHICLES.

APPLICATION FILED FEB- 26.1914.

Patented Sept. 21, 1915.

WILLIAM HAZELWOOD CARMON'IT', 01F KINGSTON, ENGLAND.

RESILIENT TIRE FOR ROAD-VEHICLES,

' Specification of Letters .Patent.-

Patented Sept. 21,1915.

Application filed February 26, 1914. Serial No. 821,214.

To all whom it may concern:

Be it known that I, WILLIAM IIAznLwooD.

CARMONT, a subject of theKing of Great Britain, residing at Kingston,Surrey, England, have invented certain new and useful Improvements inResilient Tires for .Road- Vehicles, of which the following is aspecification.

The object of this'invention' is to construct a solid resilient tire forroad vehicles of the class in which asoft rubber is used as a fillingfor what might be termed the tire cover, which tire shall be equal inresiliency to a pneumatic tire at much less cost and have the advantageover a pneumatic t1re that it will not burst or be punctured; and thechief features of the invention consist in arranging a bed or base ofsoft rubber under a tread surface and within what might be termed thecover, of tirerubber of the usual quality, and compressing such softrubber within the outer cover at the same time putting a tension orstretch on the cover and in some cases forming openings in the treadsurface at intervals through which openings, studs or blocks formingpart of the soft rubber bed or base can pass so as to be flush withor'project-from the tread surface, in such manner as to communicate thepressure directly through the soft rubber studs or blocks when these areemployed to the underlying soft rubber-base where it is absorbed, thebed or base also absorbing the pressure put upon the rema ning treadsurface formed of the usual t1re rubber.

My invention will be clearly understood by the following descriptionaided by the annexed drawings in which Figure 1 is a section of a cover,soft rubher bed or base, a ring (complete or in segments) positioned ona felly previous to being tightened up, the side plates for tighteningthe tire on the felly being also shown. Fig. 2 is a similar view to Fig. 1 but showing all the parts tightened together and as for use. Thesetwo views show my invention as constructed for an ordinary tire. Fig. 3is a plan view of a portion of a tire constructed according to myinvention and with the tread portion of the cover formed with holes intowhich project studs formed on the soft rubber base, and Figs. 4 and 5are transverse sections of same taken through a; a and b b respectively.Fig. 6 is a part longitudinal section of Fig. 3.

For the'purpose of my invention I form the body l of the tire of theusual quality of tire rubber, preferably'with tapered or inclined' sides2 and with" flanges 3' at each side of the base for being engaged byprojecting edges12, 12, of sideplates 13, 13, which are secured to'atire rim or felly 11 of ordinary construction. In this body portion 1, Iform an inverted arch or other shaped recess 4 running i completelyaround the cover in which I place a continuousring' or band 5 of bestsoft rubber, or it may be blocks of this material, and this ring 5, orthe blocks may be formed at intervals as at Figs. 3 to 6 with upstandingstuds 6, knobs or the like which enter corresponding recesses 7 formedin the bodyl of the tire, and these studs 6, knobs ortheir equivalentsmay pass right through the body so as to come out slightly beyond or maybe flush with the tread surface, or they may terminate before reachingthe tread so as to act as cushions for the surrounding parts of the tirebody. v

Under-or next to the soft rubber ring 5 or blocks I fit a ring 8preferably'of wood as a complete ring or as segments of a ring, ofwedge, cone, half round, or equivalent shape with its angled or curvedportion in the arched recess 4 of the body and bearing against the inneror under side of the soft rubber ring 5 or blocks.

The tread surface may be fiat or of any shape and may beformed withtransverse grooves, ribs or the like 10, and these may be so positionedas to alternate with the soft'rubber studs 6 projecting from or flushwith the tread when such studs 6 are employed.

When I construct the ring 8 in segments each segment may be screwed tothe felly 11 to prevent their displacement.

In making up my tire cover which is made without'any canvas lining butonly of ordinary tire rubber, I make the opening on the inside peripheryof the cover of a greater width than is required when secured on the rimor felly, and I make the soft rubber cushion of a size and shape to fitwithin the cover between the wood ring and inside of the tread surfaceof the cover so that when the thinner elements are placed in positionwith regard to each other and before being tightened on the rim thereshall be a space on each side of the ring between it and the walls ofthe cover at that part as will be understood from Fig. 1, but when thebeaded edges of the cover are pressed together by the side plates suchspaces Will be filled outv by the portions of the cover at that part,and this action of pressing. the edges of the cover together Willcompress the soft rubber in the cover, the pressure being exerted towardthe tread surface of the cover to the shape of the ring next the softrubber and at the same time this pressing of the edges of the covertogether Will, due to the resistance of the compressed softjrubber bedor base, effect a stretching orcausea tension on the sidewalls of thecover and Whenfthe Whole are securely fixed'to the Wheels rim the cover,soft rubber, and ring Will be securely fixed together, the compressionof the soft rubber and the stretching or tension on the side Walls ofthe cover insuring a resiliency which makes the tire equal to apneumatic tire. V i i What I do claim as my invention and desiretosecure by Letters Patent is 1. A resilient tire for Wheels of roadvehicles consisting of a stretchablecover of tire rubber, a filling ofsofter rubber inside the stretchable cover, a ring of suitable materialwithin the inner edges of the stretchable cover, the softer rubber beingpositioned be tween the ring and inner surface of the cover so that whenthe ring, soft rubber and the stretchable cover are positioned on therim of a Wheel and the cover is tightened at its inner edges to secureit to the rim of the Wheel, the side Walls of the cover having action onthe soft rubber to force it toward the tread surface of the cover and socompress same while the action of tightening the stretchable cover Willcause a stretch on the side Walls of the cover due to the compression ofthe soft rubber.

2. A resilient tire for Wheels of road vehi;

cles comprising a stretchable cover of tire rubber, 'arib of the samematerial as said cover formed on the tread surface of the latter, saidrib being formed with a plurality of alined openings therein at regularintervals, a ring of suitable material Within theinner edges of thestretchable cover and adapted to fit over the rim of the Wheel, afilling of softer rubber inside the stretchable cover, studs formed bythe soft rubber filling and projecting through-the openings in the ribof said cover, and clencher members for securing the stretchable cover,soft rubber filling" and ring in TJOSltlOIl on the rim of the Wheel andfor tightening the stretchable Copies of this patent may be obtained forfive cents each, by addressing the Commissioner of Patents, 7Washington, D. C.

